How to automatically populate value from action class to the JSP TextBox - struts2

Question

I am able to print value from Java Action Class to JSP Page without textbox, But when I want to put that value in a TextBox in JSP, its not coming.
My Code is :
<S:form>
<s:textfield name="toDate" key="td" > <s:property value="fromDate"/> </s:textfield>
<s:textfield name="fromDate" key="fd"> <s:property value="toDate" /> </s:textfield>
<s:submit value="Confirm"></s:submit>
</s:form>
toDate and fromDate is variables in Java Class.

Answer 1

Just dive in the Struts2 UI Tag documentation:
key : Set the key (name, value, label) for this particular component
If you want them different (eg. toDate the value to set, td the value to read, and so on), specify all of them:
<s:form>
<s:textfield name="toDate" value="td" label="To date" />
<s:textfield name="fromDate" value="fd" label="From date" />
<s:submit value="Confirm" />
</s:form>
(Obviously according to your getters and setters).

Answer 2

You can set value in TextBox using value attribute of <s:textfield> tag to value come from action class.
For this you have your getter and setter method for that variable in action class and read that value by below code:
For Example :
<s:textfield name="some_name" value="%{variable}"/>
your code look like this:
<s:form>
<s:textfield name="toDate" value="%{fromDate}" />
<s:textfield name="fromDate" value="%{toDate}" />
<s:submit value="Confirm" />
</s:form>